Vulnerability · Published Aug 14, 2026 · Assigned by VulnCheck

CVE-2026-73049SiYuan before v3.7.4 Information Disclosure via getAttributeViewBacklinks

Medium 5.8

In plain English

A medium-severity incorrect authorization in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.8Medium

Exploit odds (30 days)0.3%top 74.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260730150429-5b42614311b0	GHSA-p4qw-vx5p-g984
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260730150429-5b42614311b0	GO-2026-6833

Affected products (as reported)

Vendor	Product	Versions
siyuan-note	siyuan	0 – before 3.7.4

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

References

GitHub Security Advisory (GHSA-p4qw-vx5p-g984) vendor-advisory
VulnCheck Advisory: SiYuan before v3.7.4 Information Disclosure via getAttributeViewBacklinks third-party-advisory